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1、Unit 2 How often do you exercise?Grammar【课时 3)趣知识精讲一、how often引导的特殊疑问句1 . how often意为多久(一次)，它引导的特殊疑问句用来询问某动作发生的频率。how often通常是对一 些表示频率的副词提问，如：always, usually, often, sometimes, never等，也可以对表示多久几次 之类的频率短语提问，如 once a week, twice a year, three times a day 等。How often do you go back home?你多久回家一次？Once a w
2、eek/Often/Sometimes.一周一次/经常/有时。2 .特别提示：假设仅对像once, twice, three times这样只表示次数的词语提问，要用how many times 多 少次，不用how often o一How many times have you been to Beijing?你去过北京多少次？Only once.仅仅一次。3 .注意how often与其他短语的区别(l)howlong主要用来提问动作延续了多长时间，答语通常含有for+ 一段时间、 since +时间点 或since引导的时间状语从句。问句和答语中的谓语动词通常为延续性动词。how lon
3、g也可以用来询问 长度。4一How long can I keep this book?这本书我能借多长时间？For two weeks.两周。wHow long is the bridge?这座桥有多长？About 1,000 meters.大约 I, 000 米。(2) how soon用来询问过多久”动作才发生，谓语动词常为终止性动词，时态多为将来时，答语通常 为in +一段时间,廿一How soon will you get here?你还有多久能到这里？In five minutes.五分钟以后。(3) how far用来询问两地之间的距离有多远”。wHow far is it fr
4、om your home to your factory?你家离你的工厂有多远？About twenty minutes walk.步行大约 20 分钟。2021 江苏省淮安市】一Mike,do you have a health examination?Once a year.A. how longB. how manyC. how muchD. how often二、“比拟法”学习频率副词相同点always, usually, often, sometimes, hardly ever, never 都是频率副词，句中只有 一个行为动词时，应位于动词之前；当有助动词、系动词、情态动词时，位
5、于其 后；谓语动词为多个时，放在第一个助动词或情态动词之后(有not时，放not 之后)。always（100%）(1) always表示动作重复，状态连续，中间从来没有间断，表示频率最大，意思 是总是，一直，永远o其反义词为nevero(2) always与进行时态连用，并不强调动作正在进行，而是表示说话人的赞叹、 不满、厌烦”等情绪，带有强烈的感情色彩，结构：be always doing sthow She is always asking for leave.她老是请假。(表示不满)(3) always与not连用，表示局部否认，意思是不总是。囱The rich are not alw
6、ays happy.有钱人未必总幸福。防I do not always believe what he says.我并没始终相信他所说的话。usually（80%左右）usually的频率仅次于always,意为通常，表示通常如此，很少例外。其反义 词为unusually。usually 一般情况下位于句中。由 He usually goes to bed at ten oclock.他通常在 10 点睡觉。bWhat do you usually do on Sundays?你通常星期天干什么？often（50%左右）often”经常，常常”，强调经常性，表示动作重复，中间有间断，它比alw
7、ays, usually语气弱，其反义词为seldomo防They often go for a walk after supper.晚饭后，他们常常去散步。 She is often late for work.她上班常迟到。sometimes(30%左右)(1) sometimes表示有时，不时，间或，同义词组为at times,表示动作偶尔 发生,中间间隔较大,频率比often小。(2) sometimes有时为了比照或强调，也可位于句首或句末，但不引起倒装。跄 Sometimes he slept at home, sometimes he slept in the office.他有
8、时在家睡觉，有 时在办公室睡觉。hardly ever(l%.10%左右)hardly ever 几乎从不，很少，所表示的频率已经很少了，相当于seldom。* He hardly ever goes to bed before midnight.他很少在半夜前就寝。(2) hardly ever是具有否认意义的副词，不与not连用。never()%)(1) never表示从来不，未曾，永不”，频率为零，表示动作或状态从没发生。(2)通常情况下，句子中用了 never,就不再用含有否认意义的not, no, nothing 等词。(3) never位于句首时要用倒装语序。所Never have
9、 I met such a strange person.我从来没有碰见过这么怪的人。小提示(1)表示频率的答语有 every day, once a week, three times a day 等。(2)对表示频率的副词和短语提问用how ofteno频度副词用法行前系后情助后，句首句末表强调。(行T亍为动词；系一系动词be；情一情态动词；助一助动词)【2021 南通市David is crazy about Chinese history. He visits the museums first wherever he travels inChina.A. neverB. seldom
10、C. sometimesD. always，湍分层提分题组A根底过关练一、单项选择题1. As an American, Mike is a big fan of Chinese Kungfu., he is crazy about Beijing opera.A. MoreoverB. HoweverC. AnywayD. OtherwiseHave you heard of (he latest show Youth with You?一Yes. I am a big fan of it!A.yetB. everC. neverD. stillHe loved playing baseba
11、ll and practiced in the past. However, he plays it now.A.hardly; hardB. hard; hardlyC. hardly; hardlyD. hard;hardHow often do you chat with your friends online?_. Im busy with my study.A. Only once a month B. For a month C. Almost every day D. Maybe in two weeks一How often does Mike go to the movies?
12、. He is so busy with his study.A. AlwaysB. Hardly ever C. Sometimes D. UsuallyMy pen pal has hamburgers and coke, so he is very healthy and strong.A. alwaysB. seldomC. oftenD. usually2. 一How much juice is there in (he fridge?. Lets go to the supermarket and buy some after supper.A. NoneB. No oneC. N
13、othingD. Nobodyis your cousin?一About 1.80 meters.A. How oldB. How longC. How tallD. How fardo you play basketball with your friends?Twice a week.D. How longD. How fastA. How often B. How much C. How soon_is it from your home to the shopping mall?About 2() minutes by car.A. How longB. How soonC. How
14、far题组B能力提升练二、完型填空Last summer, my family and I went to England and we II two weeks in Cornwall. It 12 us five hours to get there by car. We 13 in a hotel near a lake. We did a lot of 14 things there: we went for long walk, played chess, went shopping and swam 15 the lake.I played happily at first, bu
15、t then something 16 happened （发生）.One morning I went to the forest near the hotel by 17.1 walked and walked. I watched the birds and took some 18 of them. When I got19, I wanted to go back to the hotel to get some food. 20 I couldnt find the way back. I tried difTerent ways. However, at last I was 2
16、1 in the same place “Oh God! What should I do? Im so 22 I thought. Liiter it started to rain. I didnt have a（n） 23 so I was wet and coki.I 24 to stay under a tree and waited for my parents. After a 25 hours they found me. It was dark and I was cold, hungry and scared. I will never go to the forest a
17、lone again.11. A. spentB. madeC. tookD. joined12.A. turnedB. tookC. showedD. got13.A. stayedB. workedC. studiedD. exercised14.A. interestedB. excitedC. boringD. interesting15.A. ofB. onC. inD. for16.A. specialB. luckyC. usefulD. terrible17.A. myselfB. yourselfC. meD. you18.A. ordersB. photosC. lesso
18、nsD. messages19.A. tiredB. hungryC. enoughD. cold20.A. IfB. OrC. SoD. But21.A. stillB. yetC. onceD. hardly22.A. excitedB. cuteC. afraidD. smart23.A. swingB. giftC. umbrellaD. bicycle24.A. likedB. paidC. forgotD. decided25.A. fewB. lotC. littleD. many三、阅读单项选择A king took a monkey for a pet. He always
19、kept him close at hand for fun. The monkey fed on rich dishes that the king gave him and grew large. He was given respect by all people around the king. The king loved and trusted him so much that he even gave him a sword（剑）to carry.Near the palace the king had a garden. Early in the springtime the
20、king noticed how beautiful the garden was and bees were flying from flower to flower. Overcome by love, he entered the garden and ordered all his servants to wait for him at the entrance.After walking through and enjoying the garden, he grew tired and said to his monkey, I want to sleep a little whi
21、le in this arbor （凉亭）of flowers. Take care that nothing disturbs （打搅）me! Having said this, the king fell asleep.Soon, a bee flew up and landed on the kings head. Seeing （his, the monkey went over to drive i（ away. But the bee came over to the king again and again. Finally, filled with great anger, t
22、he monkey drew his sword and killed the bee. However, he also broke the kings head into halves.26. The monkey was given a sword because he was.A. respectedB. trustedC. cleverD. strongWho did the king enter the garden with?A. The monkey.B. His guards.C. His servants.D. Nobody.27. Why did the king wan
23、t to have a sleep in the garden?A. He was lazy.B. He was too tired.C. He didnt want to be disturbed.D. He liked the garden very much.28. Which of the following is true according to the text?A. The kings garden was far from the palace.B. The king went into the garden to look after the flowers.C. The
24、monkey killed the king with the sword.D. Some of the kings servants paid no respect to the monkey.29. Which might be the best title for the passage?A. The Favorite PetB. The Brave SoldierC. The Clever MonkeyD. The Foolish Friend题组c培优拔尖练四、多任务混合问题Many people think if you turn off your TV your life wil
25、l be colorful. They also suggest children should watch less TV. TV can give children big problems. First, its bad fbr your studies, you spend too long on TV. You cant do well in school. Second, its bad fbr your health. Because you watch too much TV, you are getting overweight and your eyesight is ge
26、tting worse. Third, ifs bad fbr your family life. While your families are watching TV, they dont talk too much. Also it has too much fighting. Some children always follow the fighting in real life.If you turn off your TV for a week, maybe you can find something fun to do. Maybe you can read books, l
27、earn to swim or paint pictures. What do you think? Would you want to have a try?30. How many TV problems are there?31. What other things can wc do if we turn off TV?32. 把文中画线句子译成汉语。33. Because you watch too much TV, you are getting and your eyesight is getting,Nothing is more interesting than watching TV.